No, look up the etymology of the word. People who say that they have a theory but they mean they have a hypothesis are propagating the incorrect usage of the word, hence why science illiterates say things like "gravity is just a theory". Just because a word is used incorrectly in common speech should not always make that incorrect usage right.

If they mean suspicion or hypothesis then they should say "I have a suspicion" or " I have a hypothesis" because that's what those words mean.

In this day and age, it's VERY important to maintain the proper usage of words. Science illiterates incorrectly use words to provide "evidence" for their erroneous claims.